Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test People Development & Environment Environmental Issues Pollution
Which of the following is a type of air pollution that can cause respiratory problems?
1
Smog
2
Acid rain
3
Eutrophication
4
More than one of the above
5
None of the above